Can I delete production files from an order using the File Manager?

The File Manager was not designed to remove the production files from the orders placed on your sites.
 
If you want to remove the production files (generated by eDocBuilder or uploaded by your customer), you should go to the Orders area, click on the pencil icon to edit the order, and then go to the Files tab.
 
 
Related KB article: Ch. 068 File Manager